From f6d9d738e1067397cc62485e76f2beeac85b914f Mon Sep 17 00:00:00 2001
From: Birte Kristina Friesel <derf@finalrewind.org>
Date: Sun, 17 Aug 2025 10:00:37 +0200
Subject: Journey: Add JSON and GPX export of polylines

---
 lib/Travelynx.pm                      |  7 ++++
 lib/Travelynx/Controller/Traveling.pm | 26 ++++++++++++
 share/locales/en_GB.po                | 15 +++++++
 templates/journey.html.ep             | 79 +++++++++++++++++++----------------
 templates/polyline.gpx.ep             | 20 +++++++++
 5 files changed, 112 insertions(+), 35 deletions(-)
 create mode 100644 templates/polyline.gpx.ep

diff --git a/lib/Travelynx.pm b/lib/Travelynx.pm
index 607b153..586f1a0 100755
--- a/lib/Travelynx.pm
+++ b/lib/Travelynx.pm
@@ -69,6 +69,8 @@ sub startup {
 
 	$self->types->type( csv  => 'text/csv; charset=utf-8' );
 	$self->types->type( json => 'application/json; charset=utf-8' );
+	$self->types->type( gpx  => 'application/gpx+xml; charset=utf-8' );
+	$self->types->type( xml  => 'text/xml; charset=utf-8' );
 
 	$self->plugin('Config');
 
@@ -3174,6 +3176,11 @@ sub startup {
 	$authed_r->get( '/journey/:id' => [ format => [ 'html', 'json' ] ] )
 	  ->to( 'traveling#journey_details', format => undef )
 	  ->name('journey');
+	$authed_r->get( '/polyline/:id' => [ format => [ 'gpx', 'json' ] ] )->to(
+		'traveling#journey_details',
+		format          => undef,
+		polyline_export => 1
+	)->name('polyline_download');
 	$authed_r->get('/s/*station')->to('traveling#station');
 	$authed_r->get('/confirm_mail/:token')->to('account#confirm_mail');
 	$authed_r->post('/account/privacy')->to('account#privacy');
diff --git a/lib/Travelynx/Controller/Traveling.pm b/lib/Travelynx/Controller/Traveling.pm
index e23301e..084b45e 100755
--- a/lib/Travelynx/Controller/Traveling.pm
+++ b/lib/Travelynx/Controller/Traveling.pm
@@ -2149,6 +2149,32 @@ sub journey_details {
 	);
 
 	if ($journey) {
+
+		if ( $self->stash('polyline_export') ) {
+			delete $self->stash->{layout};
+			my $xml = $self->render_to_string(
+				template => 'polyline',
+				name     => sprintf( '%s %s: %s → %s',
+					$journey->{type},      $journey->{no},
+					$journey->{from_name}, $journey->{to_name} ),
+				polyline => $journey->{polyline}
+			);
+			$self->respond_to(
+				gpx => {
+					text   => $xml,
+					format => 'gpx'
+				},
+				json => {
+					json => [
+						map {
+							$_->[2] ? [ $_->[0], $_->[1], int( $_->[2] ) ] : $_
+						} @{ $journey->{polyline} }
+					]
+				},
+			);
+			return;
+		}
+
 		my $map_data = $self->journeys_to_map_data(
 			journeys       => [$journey],
 			include_manual => 1,
diff --git a/share/locales/en_GB.po b/share/locales/en_GB.po
index 6121045..48fb05a 100644
--- a/share/locales/en_GB.po
+++ b/share/locales/en_GB.po
@@ -270,6 +270,21 @@ msgstr "Export"
 msgid "journey.edit"
 msgstr "Edit"
 
+msgid "journey.map-data"
+msgstr "Map Data"
+
+msgid "journey.map.download"
+msgstr "Download"
+
+msgid "journey.map.upload"
+msgstr "Upload"
+
+msgid "journey.map.info"
+msgstr "JSON format: [[lon, lat, station ID], ...], with lon/lat in WGS84 coordinates. GPX files are compatible with BRouter. Uploads may cover either the entire route or just the route segment that belongs to this checkin; station IDs are optional when uploading map data."
+
+msgid "journey.danger"
+msgstr "Danger Zone"
+
 msgid "journey.delete"
 msgstr "Delete"
 
diff --git a/templates/journey.html.ep b/templates/journey.html.ep
index f9c78ec..b7b4223 100644
--- a/templates/journey.html.ep
+++ b/templates/journey.html.ep
@@ -317,11 +317,24 @@
 		</div>
 	</div>
 	% if (not stash('readonly')) {
-		% if (stash('with_share')) {
-			<div class="row">
-				<div class="col s12 m6 l6">
-				</div>
-				<div class="col s12 m6 l6 center-align">
+		<div class="row">
+			<div class="col s12 m6 l4 center-align">
+				<a class="btn waves-effect waves-light" href="<%= url_for('journey', id => $journey->{id}, format => 'json' ) %>">
+					<i class="material-icons left" aria-hidden="true">file_download</i>
+					%= L('journey.export')
+				</a>
+			</div>
+			<div class="col s12 m6 l4 center-align">
+				%= form_for '/journey/edit' => (method => 'POST') => begin
+					%= hidden_field 'journey_id' => param('journey_id')
+					<button class="btn waves-effect waves-light" type="submit" name="action" value="edit">
+						<i class="material-icons left" aria-hidden="true">edit</i>
+						%= L('journey.edit')
+					</button>
+				%= end
+			</div>
+			<div class="col s12 m6 l4 center-align">
+				% if (stash('with_share')) {
 					<a class="btn waves-effect waves-light action-share"
 						% if (stash('journey_visibility') eq 'public') {
 							data-url="<%= url_for('public_journey', name => current_user()->{name}, id => $journey->{id} )->to_abs->scheme('https'); %>"
@@ -334,50 +347,46 @@
 						<i class="material-icons left" aria-hidden="true">share</i>
 						%= L('journey.share')
 					</a>
-				</div>
+				% }
 			</div>
-		% }
+		</div>
+		<h2><%= L('journey.map-data') %></h2>
 		<div class="row">
-			<div class="col s12 m6 l6">
+			<div class="col s12 m6 l6 center-align">
+				<a class="btn waves-effect waves-light" href="<%= url_for('polyline_download', id => $journey->{id}, format => 'json' ) %>">
+					<i class="material-icons left" aria-label="<%= L('journey.map.download') %>">file_download</i>
+					JSON
+				</a>
 			</div>
 			<div class="col s12 m6 l6 center-align">
-				<a class="btn waves-effect waves-light" href="<%= url_for('journey', id => $journey->{id}, format => 'json' ) %>">
-					<i class="material-icons left" aria-hidden="true">file_download</i>
-					%= L('journey.export')
+				<a class="btn waves-effect waves-light" href="<%= url_for('polyline_download', id => $journey->{id}, format => 'gpx' ) %>">
+					<i class="material-icons left" aria-label="<%= L('journey.map.download') %>">file_download</i>
+					GPX
 				</a>
 			</div>
 		</div>
-		<div class="row hide-on-small-only">
+		<div class="row">
 			<div class="col s12 m6 l6 center-align">
-				<a class="waves-effect waves-light red btn action-delete"
-						data-id="<%= $journey->{id} %>"
-						data-checkin="<%= $journey->{checkin}->epoch %>"
-						data-checkout="<%= $journey->{checkout}->epoch %>">
-					<i class="material-icons left">delete_forever</i>
-					%= L('journey.delete')
+				<a class="btn disabled waves-effect waves-light" href="<%= url_for('journey', id => $journey->{id}, format => 'json' ) %>">
+					<i class="material-icons left" aria-label="<%= L('journey.map.upload') %>">file_upload</i>
+					JSON
 				</a>
 			</div>
 			<div class="col s12 m6 l6 center-align">
-				%= form_for '/journey/edit' => (method => 'POST') => begin
-					%= hidden_field 'journey_id' => param('journey_id')
-					<button class="btn waves-effect waves-light" type="submit" name="action" value="edit">
-						<i class="material-icons left" aria-hidden="true">edit</i>
-						%= L('journey.edit')
-					</button>
-				%= end
+				<a class="btn disabled waves-effect waves-light" href="<%= url_for('journey', id => $journey->{id}, format => 'json' ) %>">
+					<i class="material-icons left" aria-label="<%= L('journey.map.upload') %>">file_upload</i>
+					GPX
+				</a>
 			</div>
 		</div>
-		<div class="row hide-on-med-and-up">
-			<div class="col s12 m6 l6 center-align">
-				%= form_for '/journey/edit' => (method => 'POST') => begin
-					%= hidden_field 'journey_id' => param('journey_id')
-					<button class="btn waves-effect waves-light" type="submit" name="action" value="edit">
-						<i class="material-icons left" aria-hidden="true">edit</i>
-						%= L('journey.edit')
-					</button>
-				%= end
+		<div class="row">
+			<div class="col s12">
+				%= L('journey.map.info')
 			</div>
-			<div class="col s12 m6 l6 center-align" style="margin-top: 1em;">
+		</div>
+		<h2><%= L('journey.danger') %></h2>
+		<div class="row">
+			<div class="col s12 m12 l12 center-align" style="margin-top: 1em;">
 				<a class="waves-effect waves-light red btn action-delete"
 						data-id="<%= $journey->{id} %>"
 						data-checkin="<%= $journey->{checkin}->epoch %>"
diff --git a/templates/polyline.gpx.ep b/templates/polyline.gpx.ep
new file mode 100644
index 0000000..a243926
--- /dev/null
+++ b/templates/polyline.gpx.ep
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<gpx
+ xmlns="http://www.topografix.com/GPX/1/1"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd"
+ version="1.1"
+ creator="travelynx <%= $version %>">
+ <trk>
+  <name><%= $name %></name>
+  <trkseg>
+  % for my $entry (@{$polyline // []}) {
+   <trkpt lon="<%= $entry->[0] %>" lat="<%= $entry->[1] %>">
+   % if ($entry->[2]) {
+     <name><%= $entry->[2] %></name>
+   % }
+   </trkpt>
+  % }
+  </trkseg>
+ </trk>
+</gpx>
-- 
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